ISIS, which invested in Enigma four-years ago, has made an IRR of 25 per cent on the sale. Enigma Travel, comprising Esprit Holidays and Ski Total, specialises in ski and chalet holidays. Hotelplan UK is the parent company of tour operators Inghams and Inntravel, and also operates in the ski and winter holiday sector.

Enigma Travel Group’s managing director Andy Perrin will become group CEO of Hotelplan UK, while its chairman and founder Peter Dyer will become vice chairman of Hotelplan UK.

Hans Lerch, vice chairman and CEO of Swiss parent, Hotelplan Group, and chairman of Hotelplan UK, says: ‘This deal positions the enlarged Hotelplan UK group for significant growth across all key sectors, by reinforcing and building on the group’s long-standing position as a formidable force in the ski market and in specialist travel generally.’